It is impossible to say. They check the RPRF as soon as they receive it in London from Ontario according to my GCMS notes. They checked mine last September, saw that I had paid, transferred the money between offices and put a paid next to the box. I wouldn't take too much that they asked for that. I was told to pay that when I applied to avoid any delays. The first thing they do is collect their money.
My application has had a recommended approved since the start of feb awaiting the final approval and in security checks since then (I have only lived in Canada and the UK and have a squeaky clean record). My ECAS still shows application received. Nobody looked at my application for 5 months after the RPRF stage.
There is no answer to your question, I thought I would be done about 3 months ago. The fact that not one application from 2014 has has gone in process or decision made would suggest things are slowing down at LVO. This may be due to all the extra applications that were transferred there from other visa offices but who knows?
Sorry to be so negative, but just settle in for a wait. I hope you get processed nice and quickly but it is early days on your application yet!
